What are some alternatives?
When comparing EuropeanMX and Spamfence.net, you can also consider the following products
Hornetsecurity - Hornetsecurity offers you comprehensive, integrated managed e-mail security services.
Mailwasher - Over 8 million people use MailWasher as their spam filter
SpamTitan - SpamTitan is an anti-spam email solution specifically developed to meet the demands of modern business. Delivering a spam detection rate over 99.9%
Spamihilator - The free Anti-Spam-Filter Spamihilator removes more than 98% of spam mails before they even get into your inbox.
dmarcian - Safeguard your email from abuse
Spam Reader - Spam Reader is a free anti-spam add-on for Microsoft Outlook.